I have an iPod touch 4th generation and a few months ago I jailbroke it. But now I want to take it back to apple because the battery will die in 10 minutes flat. So at first I tried going to settings and erase all content and data but it was stuck on the apple loading logo so I read about it and it said to NEVER do that. So I turned it back on and it said I should go to iTunes and restore it. So I plugged my iPod in but since its 6.1 it said that I needed to have the latest version of iTunes to use my iPod. So I downloaded it, and now it says I need the latest version of OSX or something like that. I have no idea how to get it though:/. Can someone tell me another way to get rid of jailbreak or how to update my MacBook Pro? I'm getting an iPhone for christmas, and I can't last another 10 months with this horrible battery.
Also, Cydia is gone for some reason:/.So if there are any ways to get rid of jailbreak using that, it won't work.